-279 BLACK BUNA 70D O-RING

APG stocks the H70MD279, an AS568-279 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 12.984 in (329.79 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 13.262 in (336.85 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

This material stands up to petroleum-based oils, many alcohols, and water. Buna-N (Nitrile) is known for strong abrasion and tear resistance, reliable performance in both static and dynamic service. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in strong acids or polar solvents.

This o-ring is metal detectable for HACCP and foreign-body control programs. Maintenance and OEM teams specify it across construction equipment, hydraulic and pneumatic systems, and general industrial maintenance.

This item is sold individually under part number H70MD279. Nominal inside diameter is listed as 13 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.